Roscoe & McBride Books in Order

Roscoe & McBride continues Dr Petra McBride’s story after the McBride & Tanner books and gives her a new kind of stage. Instead of working inside a Scottish police unit, Petra is drawn into international investigations with Interpol agent Susannah Roscoe.

Petra begins the series at a low point. Her academic career has collapsed, her work with Police Scotland’s Complex Crimes Unit has ended, and she has no settled home. For someone who relies on intellect, work, and a sense of usefulness, that is a dangerous place to be.

Then Susannah Roscoe calls.

Roscoe needs a forensic psychologist for a strange case, and Petra is exactly the kind of person who can see patterns others miss. The first book, Veil of Secrets, sends the pair into a European investigation involving art, carefully staged deaths, and a killer who keeps pushing the case forward. The result is faster and more international than the Scotland-set McBride & Tanner novels.

The heart of the series is the partnership. Susannah works with the confidence and reach of an Interpol agent. Petra brings psychological insight, sharp suspicion, and a habit of walking into emotional chaos with her eyes open. Neither woman is especially simple, and that is the point. Their working relationship has to be built while danger is already moving.

Readers coming from McBride & Tanner will have the richest sense of Petra’s backstory, including why she is so unsettled at the beginning. New readers can still begin here if they want a crime thriller with travel, psychology, and a more espionage-adjacent flavour. Start with Veil of Secrets, then follow Petra and Roscoe into the next case.